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Don't fail active bundles with expunged Nexuses (reassign only) #9286

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merged 2 commits into from
Oct 28, 2025
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Don't fail active bundles with expunged Nexuses (reassign only) #9286

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[bundles] Don't fail fully-collected bundles with expunged Nexuses (r…
smklein Oct 27, 2025
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smklein Oct 28, 2025
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92 changes: 56 additions & 36 deletions nexus/db-queries/src/db/datastore/support_bundle.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -324,7 +324,7 @@ impl DataStore {
.execute_async(conn)
.await?;

// Find all bundles on nexuses that no longer exist.
// Find all bundles managed by nexuses that no longer exist.
let bundles_with_bad_nexuses = dsl::support_bundle
.filter(dsl::assigned_nexus.eq_any(invalid_nexus_zones))
.select(SupportBundle::as_select())
Expand All @@ -333,15 +333,46 @@ impl DataStore {

let bundles_to_mark_failing = bundles_with_bad_nexuses
.iter()
.map(|b| b.id)
.filter_map(|bundle| {
match bundle.state {
// If the Nexus died mid-collection, we'll mark
// this bundle failing. This should ensure that
// any storage it might have been using is
// cleaned up.
SupportBundleState::Collecting => {
Some(bundle.id)
}
// If the bundle was marked "active", we need to
// re-assign the "owning Nexus" so it can later
// be deleted, but the bundle itself has already
// been stored on a sled.
//
// There's no need to fail it.
SupportBundleState::Active => None,
// If the bundle has already been marked
// "Destroying/Failing/Failed", it's already
// irreversibly marked for deletion.
SupportBundleState::Destroying
| SupportBundleState::Failing
| SupportBundleState::Failed => None,
}
})
.collect::<Vec<_>>();

let bundles_to_reassign = bundles_with_bad_nexuses
.iter()
.filter_map(|bundle| {
if bundle.state != SupportBundleState::Failed {
Some(bundle.id)
} else {
None
match bundle.state {
// If the bundle might be using any storage on
// the provisioned sled, it gets assigned to a
// new Nexus.
SupportBundleState::Collecting
| SupportBundleState::Active
| SupportBundleState::Destroying
| SupportBundleState::Failing => {
Some(bundle.id)
}
SupportBundleState::Failed => None,
}
})
.collect::<Vec<_>>();
Expand Down Expand Up @@ -371,30 +402,21 @@ impl DataStore {
bundles_reassigned: 0,
};

// Exit a little early if there are no bundles to re-assign.
//
// This is a tiny optimization, but really, it means that
// tests without Nexuses in their blueprints can succeed if
// they also have no support bundles. In practice, this is
// rare, but in our existing test framework, it's fairly
// common.
if bundles_to_reassign.is_empty() {
return Ok(report);
if !bundles_to_reassign.is_empty() {
// Reassign bundles that haven't been marked "fully failed"
// to ourselves, so we can free their storage if they have
// been provisioned on a sled.
report.bundles_reassigned =
diesel::update(dsl::support_bundle)
.filter(dsl::id.eq_any(bundles_to_reassign))
.set(
dsl::assigned_nexus
.eq(our_nexus_id.into_untyped_uuid()),
)
.execute_async(conn)
.await?;
Comment on lines +405 to +417
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@hawkw hawkw Oct 28, 2025

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took me a moment to realize that the only diff here is that we changed the if from an early return to just making the update query conditional --- but i agree that this feels less convoluted than the early return, especially if we wanted to add additional code that runs after this query later.

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@smklein smklein Oct 28, 2025

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yeah it felt like "I didn't need an extra comment to explain an early return", because it's self-explanatory that we'd only want to update rows if there are rows to be updated

}

// Reassign bundles that haven't been marked "fully failed"
// to ourselves, so we can free their storage if they have
// been provisioned on a sled.
report.bundles_reassigned =
diesel::update(dsl::support_bundle)
.filter(dsl::id.eq_any(bundles_to_reassign))
.set(
dsl::assigned_nexus
.eq(our_nexus_id.into_untyped_uuid()),
)
.execute_async(conn)
.await?;

Ok(report)
}
.boxed()
Expand Down Expand Up @@ -1442,7 +1464,7 @@ mod test {

assert_eq!(
SupportBundleExpungementReport {
bundles_failing_missing_nexus: 1,
bundles_failing_missing_nexus: 0,
bundles_reassigned: 1,
..Default::default()
},
Expand All @@ -1452,13 +1474,11 @@ mod test {
let observed_bundle = datastore
.support_bundle_get(&opctx, bundle.id.into())
.await
.expect("Should be able to get bundle we just failed");
assert_eq!(SupportBundleState::Failing, observed_bundle.state);
assert!(
observed_bundle
.reason_for_failure
.unwrap()
.contains(FAILURE_REASON_NO_NEXUS)
.expect("Should be able to get bundle we reassigned");
assert_eq!(SupportBundleState::Active, observed_bundle.state);
assert_eq!(
observed_bundle.assigned_nexus.unwrap(),
nexus_ids[1].into(),
);

db.terminate().await;
Expand Down
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